Time doesn’t do the math by itself. You have trillions raised to millions worth of dynamic interactions of atoms and molecules, each of them taking fractions of nanoseconds to happen, and all of this, over a time-span spreading beyond 3+ billion years. It’s not time alone, so let’s get that part clear. The statistical absurdities begin to seep into the realms of possibility now, doesn’t it? On top of that, living things don’t pop up magically, inspite of what Stone Age literature might want to suggest. You have each stage reliant upon the millions of stages that preceded it, and the advancements add on.
Secondly, the real question is not the above. You could have come to the point by asking how the universe came into being, and what we are here for. That, I wouldn’t know. But if you tell me that a magical being in the sky did all this, then I wouldn’t be able to accept it. If you resign to the belief that this God-figure(singular / plural / who knows?) made everything, then I’d ask you who made this God. If you say God was / is eternal, then I’d ask you why did he/she/it/they choose this moment to make everything.
When I see heads blown off, sawn off, children raped and murdered, children born with grotesque deformities, dead in the womb, etc., I don’t see anyone ‘in charge’. If you do, it’s only because you want to see it that way, and you have no proof or evidence for supporting your stance.
And I'd respond by saying the fact that all of this is way beyond our little minds' ability to comprehend. And given that so much about the infinity of time and space coming together in this moment of life is beyond our comprehension, you look rather silly when you claim to know, by your observations with your five senses, that you have it figured out, and have concluded without a doubt that time and randomness explain all. Agnosticism is a respectable position. Atheism, especially the brand that likes to use mocking phrases like "magical being in the sky" is is the embodiment of human arrogance and folly.